School-seat



2 SheetSSheet 1.

(No Model.)

J. M. SAUDER.

SGHOOL SEAT.

No. 331,550. Patented Dec. 1, 1885.

WITNESSES INVENTOR (/%w mww 2 m X ATTORNEYS.

(No Model.) 2 Sheets-Sheet 2.

J. M. 'SAUDEB.

SGHOOL SEAT.

No. 331,550. I Patented Dec. 1, 1885.

WITNESSES L) J IJ/VENTOR:

BY M

ATTORNEYS.

are

STATES JOHN M. SAUDER, OF HARRISBURG, PENNSYLVANIA.

SCHOOL-SEAT.

SPECIFICATION forming part of Letters Patent No. 331,550, dated December1, 1885.

Application filed March 23, 1885. Serial No. 159,787. (No model.)

To all whom, it may concern:

Be it known that I, JOHN M. SAUDER, of Harrisburg, in the county ofDauphin and State of Pennsylvania, have invented certain new and usefulImprovements in School-Seats, of which the following is a full, clear,and we act description.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1, Sheet 1, is a side elevation of one of myimprovedschool-seats,tl1e seat being shown in the position it will have when inuse. Fig. 2, Sheet 1, is a side elevation of the same fold ed. Fig. 3,Sheet 1, is an elevation of a part of the same, showing the inner sideof a seatarm, seat-bar, and part of the end frame, the seat-arm beingshown in full lines in the position it will have when not in use and indotted lines in its position when in use. Fig. 4, 2

Sheet 1, is the same view as Fig. 3, but showing the seat in itsposition when folded. Fig. 5, Sheet 1, is an elevation of a part of theend frame, showing its outer side. Fig. 6, Sheet 1, is a side elevationof one of the pivot-bolts and its nut. Fig. 7, Sheet 1, is a sectionalplan View of the lowerjoint of the seat-bar. Fig. 8, Sheet 2, is anunder side view of a part of the seat, showing the lockinggroove. Fig.9, Sheet 2, is a perspective view of a portion of the lockingfiange ofthe seatarm or end frame. Fig. 10, Sheet 2, is a sectional elevation ofa portion of the seat and of the lockingfiange. Fig. 11, Sheet 2, is anunder side view of a part of the seat, showing a modification of thelocking-groove. Fig. 12, Sheet 2, is a perspective View of a portion ofthe locking-flange of the seat arm or end frame, showing a modified formof the said flange. Fig. 13, Sheet 2, is a side elevation of a seatarmand seat.

The object of this invention is to provide school'seats constructed insuch a manner that they can be readily folded and extended, and will benoiseless when in use.

The invention consists in the construction and combination of thevarious parts by means of which the seat-arms are connected with the endframes, as will be hereinafter fully described, and then pointed out inthe claims.

A. represents the end frames, the lower parts of which are extendedforward and have rounded projections B, formed upon them, to serve assupports for the seat-bars O, and to which the lower ends of the saidseatbars are hinged. The lower ends of the seat-bars G are rounded, haverecesses E formed in their outer sides, and have convex or roundedprojections or bosses D formed upon the middle part of their inner sidesto enter rounded recesses F, formed in the adjacent sides of thesupports B. Upon the other sides of the supports B are formed roundedrecesses F. V

The supports B in the centers of the recesses F and the lower ends ofthe seat-barsO in the centers of the bosses D and recesses E areperforated to receive the pivot-bolts G, which have nuts H screwed upontheir ends.

Upon the bolts G, beneath their heads and the nuts H, are placedfourarmed washers I,

which are thus directly over the recessesE F,

and are sprunginto the said recesses by screwing up the nuts H, so thatthe ends of the seat-bars G will be held snugly against the supports B,and all wear will be taken up. The ends of the arms of the washers Irest in small recesses in the supports B and seatbars 0 at the edges ofthe recesses EF,so that the outer surfaces of the said washers will beflush with the surfaces of the said supports B. The movements of theends of the seat-bars (1 upon the supports B are limited by two projections, J ,which enter curved slots K, formed in the forward upperparts and the rearlower parts of the supports B, as shown in Figs. 3 andat. The forward ends of the bolts G are slotted to receive pins L,passedthrough holes in the nuts H, to prevent the said nuts from workingloose, as shown in Fig. 6. The upper ends of the seat-barsG areconnected with projections M formed upon the lower forward parts of theseat-arms N, by joints similar to those that connect the lower ends ofthe said seat-bars O to the supports B, except that only one curvedslot, K, is formed in the projections M, and only one stop projection,J, is formed on the upper end of the said seatbar 0.

At the inner sides of the seat-bars G are placed springrods O, the endsof which are bent outward, and are inserted in holes in the upper rearparts of the supports 13, and in the lower parts of the projections M,recesses P being formed in the said supports B, and projections M, asillustrated in Fig. 5, to reeeive the end parts of the spring-rods O,and prevent them from being pinched between and worn by the saidsupports and projections and the seat-bars O.

Upon the forward edges of the inner sides of the seat-bars O, at alittle above their centers, are formed projections Q, against which thesaid rods 0 strike, and are put under ten sion when the seats arelowered into position for use, the tension being sufficient to raise theseats when left free into the position shown in full lines in Fig. 3.

WVhen the seat is in use, its rear part is pressed downward into theposition shown in Fig. 1 and in dotted lines in Fig. 3, the rear ends ofthe seat-arms N, or rubber blocks R, attached to the said ends, restingupon projections S, formed upon the forward edges of the end frames, A.WVith this construction, when the pupil rises, the elasticity of therods 0 raises the rear edge of the seat into the position shown in fulllines in Fig. 3. Then by pressing back with his legs against the forwardedge of the seat, or by taking hold of the rear edge of the seat withhis hand and raising it, the seat will swing back into the positionsshown in Figs. 2 and 4, and will lie snugly against the forward side ofthe seatback, leaving the greatest possible space for the passage outand in of the pupil.

When the folded seat is to be extended or lowered into position for use,the pupil takes hold of the rear edge of the seat and swings it forward,when the rods 0 draw it into the position shown in full lines in Fig. 3,and as the pupil sits down upon it his weight brings it into theposition shown in Fig. 1 and in dotted lines in Fig. 3.

In the lower sides of the wooden strips T, forming the seat back andtop, and near the side edges of the said seat back and top, are formedT-grooves U, as shown in Figs. 8 and and 10, or L-grooves, as shown inFig. 11, and which have enlargements V formed in them upon both sides,as shown in Fig. 8, or upon one side, as shown in Fig. 11. The enlarge-Inents V can be made rectangular, as shown in Fig. 8, 01' triangular, asshown in Fig. 11.

Upon the upper sides of the seat-arms N and the forward edges of theupper parts of the end frames A, are formed flanges W, which haverectangular or triangular projectionsX upon one or both sides,corresponding in shape and position with the enlargements V of thegrooves U. The projections X are undercut,"

giving them a T form, as shown in Fig. 9, or an L form, as shown in Fig.12, and the flanges thus formed are tapered, so that when the seats andbacks are placed upon the flanges W with the enlargement V over theprojections X, and are driven forward, the tapered flanges of the saidprojections will draw the said seats and backs down snugly upon theshoulders of the said flanges and hold the said seats and backs securelyin place.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1 In a school-seat, the combination ,with theend frames, A, having projections B, provided with recesses F upon theopposite sides, and curved slots K, and the seat-arms N, havingprojections, M, provided with a boss upon one side, a recess upon theother side, and a' curved slot, K, of the seat-bars 0, having recessesE, bosses D, and projections J J at their ends, and projections Q upontheir upper forward parts, the spring connecting-rods O, .30

the pivot-bolts G, and nuts H, and the fourarmed washers I,substantially as herein shown and described, whereby the seat can bereadily folded and extended, and will automatically take an inclinedposition, as set forth.

2. In a school-seat, the combination, with the end frame, A, theseat-arm N, and the seatbar 0, jointed at its ends to the said frame andseatarm, and provided with a project-ion, Q, of the spring-rod O,substantially as herein shown and described, whereby the seat will takean inclined position when left free, as set forth.

3. In a school-seat, the combination, with the seat-frame A, having aforward projection, B, and a projection S, the seat-arm N, having aprojection, M, and the seat-bar O, jointed to the projections 13 and M,and provided with lug Q, of the spring-rod O, substantially as shown anddescribed.

4. In a school seat, the combination, with and the locking-pin L,substantially as herein shown and described, whereby the movement of thejoint is prevented from working the said bolt and nut loose, as setforth.

JOHN M. SAUDEB. Witnesses:

JAMES T. GRAHAM, O. SEDGWVIOK.

